--- a/src/c11/impl/threads_posix.c
+++ b/src/c11/impl/threads_posix.c
@@ -255,15 +255,29 @@ static inline int
 thrd_create(thrd_t *thr, thrd_start_t func, void *arg)
 {
     struct impl_thrd_param *pack;
+#ifdef __GLIBC__
+    pthread_attr_t *attrp = NULL;
+#else
+    pthread_attr_t attr = { 0 };
+    pthread_attr_init(&attr);
+    pthread_attr_setstacksize(&attr, 8388608);
+    pthread_attr_t *attrp = &attr;
+#endif
     assert(thr != NULL);
     pack = (struct impl_thrd_param *)malloc(sizeof(struct impl_thrd_param));
     if (!pack) return thrd_nomem;
     pack->func = func;
     pack->arg = arg;
-    if (pthread_create(thr, NULL, impl_thrd_routine, pack) != 0) {
+    if (pthread_create(thr, attrp, impl_thrd_routine, pack) != 0) {
+#ifndef __GLIBC__
+        pthread_attr_destroy(&attr);
+#endif
         free(pack);
         return thrd_error;
     }
+#ifndef __GLIBC__
+    pthread_attr_destroy(&attr);
+#endif
     return thrd_success;
 }
 
